package com.fangsiqi.maven;

public class Main {
    public static void main(String[] args) {
        // System.out.println(Shape.PI);

        System.out.println("Hello World!\n");
        // System.out.println("周长="+Shape.calculatePerimeter(5));
        //
        // Circle circle=new Circle(5);
        // double area=circle.calculateArea(5);
        // System.out.println("面积="+area);
    }
}